WO2007098073A3 - Current mirror with improved output impedance at low power supplies - Google Patents

Current mirror with improved output impedance at low power supplies Download PDF

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Publication number
WO2007098073A3
WO2007098073A3 PCT/US2007/004230 US2007004230W WO2007098073A3 WO 2007098073 A3 WO2007098073 A3 WO 2007098073A3 US 2007004230 W US2007004230 W US 2007004230W WO 2007098073 A3 WO2007098073 A3 WO 2007098073A3
Authority
WO
WIPO (PCT)
Prior art keywords
current mirror
output impedance
low power
power supplies
improved output
Prior art date
Application number
PCT/US2007/004230
Other languages
French (fr)
Other versions
WO2007098073A2 (en
Inventor
Paulius Mindaugas Mosinskis
Original Assignee
Sioptical Inc
Paulius Mindaugas Mosinskis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sioptical Inc, Paulius Mindaugas Mosinskis filed Critical Sioptical Inc
Publication of WO2007098073A2 publication Critical patent/WO2007098073A2/en
Publication of WO2007098073A3 publication Critical patent/WO2007098073A3/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/262—Current mirrors using field-effect transistors only

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

A current mirror circuit arrangement is formed to maintain a high output impedance when utilized with a relatively low voltage power supply. A common mode voltage regulator circuit is utilized in conjunction with the output branch of the current mirror to eliminate the need for an additional active device in series with the output transistor of a current mirror to control its drain voltage. The elimination of the second active device thus increases the available headroom for the output branch (i.e., adds one VDS)- The increased headroom in the inventive current mirror is particularly advantageous for low voltage applications, since it is capable of maintaining the high output impedance required for accurate mirroring of the input current.
PCT/US2007/004230 2006-02-17 2007-02-16 Current mirror with improved output impedance at low power supplies WO2007098073A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US77494406P 2006-02-17 2006-02-17
US60/774,944 2006-02-17
US11/706,487 US20070194838A1 (en) 2006-02-17 2007-02-15 Current mirror with improved output impedance at low power supplies
US11/706,487 2007-02-15

Publications (2)

Publication Number Publication Date
WO2007098073A2 WO2007098073A2 (en) 2007-08-30
WO2007098073A3 true WO2007098073A3 (en) 2008-05-08

Family

ID=38427560

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/004230 WO2007098073A2 (en) 2006-02-17 2007-02-16 Current mirror with improved output impedance at low power supplies

Country Status (2)

Country Link
US (1) US20070194838A1 (en)
WO (1) WO2007098073A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8138742B2 (en) * 2008-02-06 2012-03-20 Mediatek Inc. Semiconductor circuits capable of mitigating unwanted effects caused by input signal variations
US9547324B2 (en) * 2014-04-03 2017-01-17 Qualcomm Incorporated Power-efficient, low-noise, and process/voltage/temperature (PVT)—insensitive regulator for a voltage-controlled oscillator (VCO)
CN106505953B (en) * 2016-07-05 2019-03-22 络达科技股份有限公司 Operational amplifier circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6018236A (en) * 1996-06-26 2000-01-25 Micron Technology, Inc. Differential voltage regulator
US6633198B2 (en) * 2001-08-27 2003-10-14 Analog Devices, Inc. Low headroom current mirror

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451898A (en) * 1993-11-12 1995-09-19 Rambus, Inc. Bias circuit and differential amplifier having stabilized output swing
US5959492A (en) * 1997-10-31 1999-09-28 Vlsi Technology, Inc. High speed differential driver circuitry and methods for implementing the same
US6448848B1 (en) * 2000-12-29 2002-09-10 Intel Corporation Method of controlling common-mode in differential gm-C circuits
US6737919B2 (en) * 2001-05-25 2004-05-18 Infineon Technologies North America Corp. Method and apparatus for calibrating a Gm cell utilizing a replica Gm cell
US6744308B1 (en) * 2002-08-30 2004-06-01 Microtune (Texas), L.P. System and method for establishing the input impedance of an amplifier in a stacked configuration
US7116169B2 (en) * 2004-06-10 2006-10-03 Texas Instruments Incorporated Driver apparatus and method of operation thereof
US7298210B2 (en) * 2005-05-24 2007-11-20 Texas Instruments Incorporated Fast settling, low noise, low offset operational amplifier and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6018236A (en) * 1996-06-26 2000-01-25 Micron Technology, Inc. Differential voltage regulator
US6633198B2 (en) * 2001-08-27 2003-10-14 Analog Devices, Inc. Low headroom current mirror

Also Published As

Publication number Publication date
WO2007098073A2 (en) 2007-08-30
US20070194838A1 (en) 2007-08-23

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